src/gallium/drivers/llvmpipe/lp_setup.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * Tiling engine.
  30  *
  31  * Builds per-tile display lists and executes them on calls to
  32  * lp_setup_flush().
  33  */
  34
  35 #include "pipe/p_defines.h"
  36 #include "util/u_framebuffer.h"
  37 #include "util/u_inlines.h"
  38 #include "util/u_memory.h"
  39 #include "util/u_pack_color.h"
  40 #include "util/u_surface.h"
  41 #include "lp_context.h"
  42 #include "lp_scene.h"
  43 #include "lp_scene_queue.h"
  44 #include "lp_texture.h"
  45 #include "lp_debug.h"
  46 #include "lp_fence.h"
  47 #include "lp_rast.h"
  48 #include "lp_setup_context.h"
  49 #include "lp_screen.h"
  50 #include "lp_state.h"
  51 #include "state_tracker/sw_winsys.h"
  52
  53 #include "draw/draw_context.h"
  54 #include "draw/draw_vbuf.h"
  55
  56
  57 static void set_scene_state( struct lp_setup_context *, enum setup_state );
  58
  59
  60 struct lp_scene *
  61 lp_setup_get_current_scene(struct lp_setup_context *setup)
  62 {
  63    if (!setup->scene) {
  64
  65       /* wait for a free/empty scene
  66        */
  67       setup->scene = lp_scene_dequeue(setup->empty_scenes, TRUE);
  68
  69       assert(lp_scene_is_empty(setup->scene));
  70
  71       lp_scene_begin_binning(setup->scene,
  72                              &setup->fb );
  73    }
  74    return setup->scene;
  75 }
  76
  77
  78 /**
  79  * Check if the size of the current scene has exceeded the limit.
  80  * If so, flush/render it.
  81  */
  82 static void
  83 setup_check_scene_size_and_flush(struct lp_setup_context *setup)
  84 {
  85    if (setup->scene) {
  86       struct lp_scene *scene = lp_setup_get_current_scene(setup);
  87       unsigned size = lp_scene_get_size(scene);
  88
  89       if (size > LP_MAX_SCENE_SIZE) {
  90          /*printf("LLVMPIPE: scene size = %u, flushing.\n", size);*/
  91          set_scene_state( setup, SETUP_FLUSHED );
  92          /*assert(lp_scene_get_size(scene) == 0);*/
  93       }
  94    }
  95 }
  96
  97
  98 static void
  99 first_triangle( struct lp_setup_context *setup,
 100                 const float (*v0)[4],
 101                 const float (*v1)[4],
 102                 const float (*v2)[4])
 103 {
 104    set_scene_state( setup, SETUP_ACTIVE );
 105    lp_setup_choose_triangle( setup );
 106    setup->triangle( setup, v0, v1, v2 );
 107 }
 108
 109 static void
 110 first_line( struct lp_setup_context *setup,
 111             const float (*v0)[4],
 112             const float (*v1)[4])
 113 {
 114    set_scene_state( setup, SETUP_ACTIVE );
 115    lp_setup_choose_line( setup );
 116    setup->line( setup, v0, v1 );
 117 }
 118
 119 static void
 120 first_point( struct lp_setup_context *setup,
 121              const float (*v0)[4])
 122 {
 123    set_scene_state( setup, SETUP_ACTIVE );
 124    lp_setup_choose_point( setup );
 125    setup->point( setup, v0 );
 126 }
 127
 128 static void reset_context( struct lp_setup_context *setup )
 129 {
 130    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 131
 132    /* Reset derived state */
 133    setup->constants.stored_size = 0;
 134    setup->constants.stored_data = NULL;
 135    setup->fs.stored = NULL;
 136    setup->dirty = ~0;
 137
 138    /* no current bin */
 139    setup->scene = NULL;
 140
 141    /* Reset some state:
 142     */
 143    setup->clear.flags = 0;
 144
 145    /* Have an explicit "start-binning" call and get rid of this
 146     * pointer twiddling?
 147     */
 148    setup->line = first_line;
 149    setup->point = first_point;
 150    setup->triangle = first_triangle;
 151 }
 152
 153
 154 /** Rasterize all scene's bins */
 155 static void
 156 lp_setup_rasterize_scene( struct lp_setup_context *setup )
 157 {
 158    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 159
 160    lp_scene_rasterize(scene, setup->rast);
 161
 162    reset_context( setup );
 163
 164    LP_DBG(DEBUG_SETUP, "%s done \n", __FUNCTION__);
 165 }
 166
 167
 168
 169 static void
 170 begin_binning( struct lp_setup_context *setup )
 171 {
 172    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 173
 174    LP_DBG(DEBUG_SETUP, "%s color: %s depth: %s\n", __FUNCTION__,
 175           (setup->clear.flags & PIPE_CLEAR_COLOR) ? "clear": "load",
 176           (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) ? "clear": "load");
 177
 178    if (setup->fb.nr_cbufs) {
 179       if (setup->clear.flags & PIPE_CLEAR_COLOR) {
 180          lp_scene_bin_everywhere( scene,
 181                                   lp_rast_clear_color,
 182                                   setup->clear.color );
 183          scene->has_color_clear = TRUE;
 184       }
 185    }
 186
 187    if (setup->fb.zsbuf) {
 188       if (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) {
 189          lp_scene_bin_everywhere( scene,
 190                                   lp_rast_clear_zstencil,
 191                                   setup->clear.zstencil );
 192          scene->has_depth_clear = TRUE;
 193       }
 194    }
 195
 196    LP_DBG(DEBUG_SETUP, "%s done\n", __FUNCTION__);
 197 }
 198
 199
 200 /* This basically bins and then flushes any outstanding full-screen
 201  * clears.
 202  *
 203  * TODO: fast path for fullscreen clears and no triangles.
 204  */
 205 static void
 206 execute_clears( struct lp_setup_context *setup )
 207 {
 208    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 209
 210    begin_binning( setup );
 211    lp_setup_rasterize_scene( setup );
 212 }
 213
 214
 215 static void
 216 set_scene_state( struct lp_setup_context *setup,
 217                  enum setup_state new_state )
 218 {
 219    unsigned old_state = setup->state;
 220
 221    if (old_state == new_state)
 222       return;
 223
 224    LP_DBG(DEBUG_SETUP, "%s old %d new %d\n", __FUNCTION__, old_state, new_state);
 225
 226    switch (new_state) {
 227    case SETUP_ACTIVE:
 228       begin_binning( setup );
 229       break;
 230
 231    case SETUP_CLEARED:
 232       if (old_state == SETUP_ACTIVE) {
 233          assert(0);
 234          return;
 235       }
 236       break;
 237
 238    case SETUP_FLUSHED:
 239       if (old_state == SETUP_CLEARED)
 240          execute_clears( setup );
 241       else
 242          lp_setup_rasterize_scene( setup );
 243       break;
 244
 245    default:
 246       assert(0 && "invalid setup state mode");
 247    }
 248
 249    setup->state = new_state;
 250 }
 251
 252
 253 /**
 254  * \param flags  bitmask of PIPE_FLUSH_x flags
 255  */
 256 void
 257 lp_setup_flush( struct lp_setup_context *setup,
 258                 unsigned flags )
 259 {
 260    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 261
 262    if (setup->scene) {
 263       struct lp_scene *scene = lp_setup_get_current_scene(setup);
 264       union lp_rast_cmd_arg dummy = {0};
 265
 266       if (flags & (PIPE_FLUSH_SWAPBUFFERS |
 267                    PIPE_FLUSH_FRAME)) {
 268          /* Store colors in the linear color buffer(s).
 269           * If we don't do this here, we'll end up converting the tiled
 270           * data to linear in the texture_unmap() function, which will
 271           * not be a parallel/threaded operation as here.
 272           */
 273          lp_scene_bin_everywhere(scene, lp_rast_store_color, dummy);
 274       }
 275    }
 276
 277    set_scene_state( setup, SETUP_FLUSHED );
 278 }
 279
 280
 281 void
 282 lp_setup_bind_framebuffer( struct lp_setup_context *setup,
 283                            const struct pipe_framebuffer_state *fb )
 284 {
 285    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 286
 287    /* Flush any old scene.
 288     */
 289    set_scene_state( setup, SETUP_FLUSHED );
 290
 291    /* Set new state.  This will be picked up later when we next need a
 292     * scene.
 293     */
 294    util_copy_framebuffer_state(&setup->fb, fb);
 295 }
 296
 297
 298 void
 299 lp_setup_clear( struct lp_setup_context *setup,
 300                 const float *color,
 301                 double depth,
 302                 unsigned stencil,
 303                 unsigned flags )
 304 {
 305    struct lp_scene *scene = lp_setup_get_current_scene(setup);
 306    unsigned i;
 307
 308    LP_DBG(DEBUG_SETUP, "%s state %d\n", __FUNCTION__, setup->state);
 309
 310
 311    if (flags & PIPE_CLEAR_COLOR) {
 312       for (i = 0; i < 4; ++i)
 313          setup->clear.color.clear_color[i] = float_to_ubyte(color[i]);
 314    }
 315
 316    if (flags & PIPE_CLEAR_DEPTHSTENCIL) {
 317       setup->clear.zstencil.clear_zstencil =
 318          util_pack_z_stencil(setup->fb.zsbuf->format,
 319                              depth,
 320                              stencil);
 321    }
 322
 323    if (setup->state == SETUP_ACTIVE) {
 324       /* Add the clear to existing scene.  In the unusual case where
 325        * both color and depth-stencil are being cleared when there's
 326        * already been some rendering, we could discard the currently
 327        * binned scene and start again, but I don't see that as being
 328        * a common usage.
 329        */
 330       if (flags & PIPE_CLEAR_COLOR) {
 331          lp_scene_bin_everywhere( scene,
 332                                   lp_rast_clear_color,
 333                                   setup->clear.color );
 334          scene->has_color_clear = TRUE;
 335       }
 336
 337       if (setup->clear.flags & PIPE_CLEAR_DEPTHSTENCIL) {
 338          lp_scene_bin_everywhere( scene,
 339                                   lp_rast_clear_zstencil,
 340                                   setup->clear.zstencil );
 341          scene->has_depth_clear = TRUE;
 342       }
 343
 344    }
 345    else {
 346       /* Put ourselves into the 'pre-clear' state, specifically to try
 347        * and accumulate multiple clears to color and depth_stencil
 348        * buffers which the app or state-tracker might issue
 349        * separately.
 350        */
 351       set_scene_state( setup, SETUP_CLEARED );
 352
 353       setup->clear.flags |= flags;
 354    }
 355 }
 356
 357
 358 /**
 359  * Emit a fence.
 360  */
 361 struct pipe_fence_handle *
 362 lp_setup_fence( struct lp_setup_context *setup )
 363 {
 364    if (setup->num_threads == 0) {
 365       return NULL;
 366    }
 367    else {
 368       struct lp_scene *scene = lp_setup_get_current_scene(setup);
 369       const unsigned rank = lp_scene_get_num_bins( scene ); /* xxx */
 370       struct lp_fence *fence = lp_fence_create(rank);
 371
 372       LP_DBG(DEBUG_SETUP, "%s rank %u\n", __FUNCTION__, rank);
 373
 374       set_scene_state( setup, SETUP_ACTIVE );
 375
 376       /* insert the fence into all command bins */
 377       lp_scene_bin_everywhere( scene,
 378                                lp_rast_fence,
 379                                lp_rast_arg_fence(fence) );
 380
 381       return (struct pipe_fence_handle *) fence;
 382    }
 383 }
 384
 385
 386 void
 387 lp_setup_set_triangle_state( struct lp_setup_context *setup,
 388                              unsigned cull_mode,
 389                              boolean ccw_is_frontface,
 390                              boolean scissor,
 391                              boolean gl_rasterization_rules)
 392 {
 393    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 394
 395    setup->ccw_is_frontface = ccw_is_frontface;
 396    setup->cullmode = cull_mode;
 397    setup->triangle = first_triangle;
 398    setup->scissor_test = scissor;
 399    setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
 400 }
 401
 402
 403
 404 void
 405 lp_setup_set_fs_inputs( struct lp_setup_context *setup,
 406                         const struct lp_shader_input *input,
 407                         unsigned nr )
 408 {
 409    LP_DBG(DEBUG_SETUP, "%s %p %u\n", __FUNCTION__, (void *) input, nr);
 410
 411    memcpy( setup->fs.input, input, nr * sizeof input[0] );
 412    setup->fs.nr_inputs = nr;
 413 }
 414
 415 void
 416 lp_setup_set_fs_functions( struct lp_setup_context *setup,
 417                            lp_jit_frag_func jit_function0,
 418                            lp_jit_frag_func jit_function1,
 419                            boolean opaque )
 420 {
 421    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) jit_function0);
 422    /* FIXME: reference count */
 423
 424    setup->fs.current.jit_function[0] = jit_function0;
 425    setup->fs.current.jit_function[1] = jit_function1;
 426    setup->fs.current.opaque = opaque;
 427    setup->dirty |= LP_SETUP_NEW_FS;
 428 }
 429
 430 void
 431 lp_setup_set_fs_constants(struct lp_setup_context *setup,
 432                           struct pipe_resource *buffer)
 433 {
 434    LP_DBG(DEBUG_SETUP, "%s %p\n", __FUNCTION__, (void *) buffer);
 435
 436    pipe_resource_reference(&setup->constants.current, buffer);
 437
 438    setup->dirty |= LP_SETUP_NEW_CONSTANTS;
 439 }
 440
 441
 442 void
 443 lp_setup_set_alpha_ref_value( struct lp_setup_context *setup,
 444                               float alpha_ref_value )
 445 {
 446    LP_DBG(DEBUG_SETUP, "%s %f\n", __FUNCTION__, alpha_ref_value);
 447
 448    if(setup->fs.current.jit_context.alpha_ref_value != alpha_ref_value) {
 449       setup->fs.current.jit_context.alpha_ref_value = alpha_ref_value;
 450       setup->dirty |= LP_SETUP_NEW_FS;
 451    }
 452 }
 453
 454 void
 455 lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 456                                  const ubyte refs[2] )
 457 {
 458    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 459
 460    if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
 461        setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
 462       setup->fs.current.jit_context.stencil_ref_front = refs[0];
 463       setup->fs.current.jit_context.stencil_ref_back = refs[1];
 464       setup->dirty |= LP_SETUP_NEW_FS;
 465    }
 466 }
 467
 468 void
 469 lp_setup_set_blend_color( struct lp_setup_context *setup,
 470                           const struct pipe_blend_color *blend_color )
 471 {
 472    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 473
 474    assert(blend_color);
 475
 476    if(memcmp(&setup->blend_color.current, blend_color, sizeof *blend_color) != 0) {
 477       memcpy(&setup->blend_color.current, blend_color, sizeof *blend_color);
 478       setup->dirty |= LP_SETUP_NEW_BLEND_COLOR;
 479    }
 480 }
 481
 482
 483 void
 484 lp_setup_set_scissor( struct lp_setup_context *setup,
 485                       const struct pipe_scissor_state *scissor )
 486 {
 487    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 488
 489    assert(scissor);
 490
 491    if (memcmp(&setup->scissor.current, scissor, sizeof(*scissor)) != 0) {
 492       setup->scissor.current = *scissor; /* struct copy */
 493       setup->dirty |= LP_SETUP_NEW_SCISSOR;
 494    }
 495 }
 496
 497
 498 void
 499 lp_setup_set_flatshade_first( struct lp_setup_context *setup,
 500                               boolean flatshade_first )
 501 {
 502    setup->flatshade_first = flatshade_first;
 503 }
 504
 505
 506 void
 507 lp_setup_set_vertex_info( struct lp_setup_context *setup,
 508                           struct vertex_info *vertex_info )
 509 {
 510    /* XXX: just silently holding onto the pointer:
 511     */
 512    setup->vertex_info = vertex_info;
 513 }
 514
 515
 516 /**
 517  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 518  */
 519 void
 520 lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 521                                     unsigned num,
 522                                     struct pipe_sampler_view **views)
 523 {
 524    unsigned i;
 525
 526    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 527
 528    assert(num <= PIPE_MAX_SAMPLERS);
 529
 530    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 531       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 532
 533       if(view) {
 534          struct pipe_resource *tex = view->texture;
 535          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 536          struct lp_jit_texture *jit_tex;
 537          jit_tex = &setup->fs.current.jit_context.textures[i];
 538          jit_tex->width = tex->width0;
 539          jit_tex->height = tex->height0;
 540          jit_tex->depth = tex->depth0;
 541          jit_tex->last_level = tex->last_level;
 542
 543          /* We're referencing the texture's internal data, so save a
 544           * reference to it.
 545           */
 546          pipe_resource_reference(&setup->fs.current_tex[i], tex);
 547
 548          if (!lp_tex->dt) {
 549             /* regular texture - setup array of mipmap level pointers */
 550             int j;
 551             for (j = 0; j <= tex->last_level; j++) {
 552                jit_tex->data[j] =
 553                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 554                                                  LP_TEX_LAYOUT_LINEAR);
 555                jit_tex->row_stride[j] = lp_tex->row_stride[j];
 556                jit_tex->img_stride[j] = lp_tex->img_stride[j];
 557             }
 558          }
 559          else {
 560             /* display target texture/surface */
 561             /*
 562              * XXX: Where should this be unmapped?
 563              */
 564
 565             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 566             struct sw_winsys *winsys = screen->winsys;
 567             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 568                                                          PIPE_TRANSFER_READ);
 569             jit_tex->row_stride[0] = lp_tex->row_stride[0];
 570             jit_tex->img_stride[0] = lp_tex->img_stride[0];
 571             assert(jit_tex->data[0]);
 572          }
 573       }
 574    }
 575
 576    setup->dirty |= LP_SETUP_NEW_FS;
 577 }
 578
 579
 580 /**
 581  * Is the given texture referenced by any scene?
 582  * Note: we have to check all scenes including any scenes currently
 583  * being rendered and the current scene being built.
 584  */
 585 unsigned
 586 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
 587                                 const struct pipe_resource *texture )
 588 {
 589    unsigned i;
 590
 591    /* check the render targets */
 592    for (i = 0; i < setup->fb.nr_cbufs; i++) {
 593       if (setup->fb.cbufs[i]->texture == texture)
 594          return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 595    }
 596    if (setup->fb.zsbuf && setup->fb.zsbuf->texture == texture) {
 597       return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 598    }
 599
 600    /* check textures referenced by the scene */
 601    for (i = 0; i < Elements(setup->scenes); i++) {
 602       if (lp_scene_is_resource_referenced(setup->scenes[i], texture)) {
 603          return PIPE_REFERENCED_FOR_READ;
 604       }
 605    }
 606
 607    return PIPE_UNREFERENCED;
 608 }
 609
 610
 611 /**
 612  * Called by vbuf code when we're about to draw something.
 613  */
 614 void
 615 lp_setup_update_state( struct lp_setup_context *setup )
 616 {
 617    struct lp_scene *scene;
 618
 619    LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
 620
 621    setup_check_scene_size_and_flush(setup);
 622
 623    scene = lp_setup_get_current_scene(setup);
 624
 625    assert(setup->fs.current.jit_function);
 626
 627    /* Some of the 'draw' pipeline stages may have changed some driver state.
 628     * Make sure we've processed those state changes before anything else.
 629     *
 630     * XXX this is the only place where llvmpipe_context is used in the
 631     * setup code.  This may get refactored/changed...
 632     */
 633    {
 634       struct llvmpipe_context *lp = llvmpipe_context(scene->pipe);
 635       if (lp->dirty) {
 636          llvmpipe_update_derived(lp);
 637       }
 638       assert(lp->dirty == 0);
 639    }
 640
 641    if(setup->dirty & LP_SETUP_NEW_BLEND_COLOR) {
 642       uint8_t *stored;
 643       unsigned i, j;
 644
 645       stored = lp_scene_alloc_aligned(scene, 4 * 16, 16);
 646
 647       if (stored) {
 648          /* smear each blend color component across 16 ubyte elements */
 649          for (i = 0; i < 4; ++i) {
 650             uint8_t c = float_to_ubyte(setup->blend_color.current.color[i]);
 651             for (j = 0; j < 16; ++j)
 652                stored[i*16 + j] = c;
 653          }
 654
 655          setup->blend_color.stored = stored;
 656
 657          setup->fs.current.jit_context.blend_color = setup->blend_color.stored;
 658       }
 659
 660       setup->dirty |= LP_SETUP_NEW_FS;
 661    }
 662
 663    if (setup->dirty & LP_SETUP_NEW_SCISSOR) {
 664       float *stored;
 665
 666       stored = lp_scene_alloc_aligned(scene, 4 * sizeof(int32_t), 16);
 667
 668       if (stored) {
 669          stored[0] = (float) setup->scissor.current.minx;
 670          stored[1] = (float) setup->scissor.current.miny;
 671          stored[2] = (float) setup->scissor.current.maxx;
 672          stored[3] = (float) setup->scissor.current.maxy;
 673
 674          setup->scissor.stored = stored;
 675
 676          setup->fs.current.jit_context.scissor_xmin = stored[0];
 677          setup->fs.current.jit_context.scissor_ymin = stored[1];
 678          setup->fs.current.jit_context.scissor_xmax = stored[2];
 679          setup->fs.current.jit_context.scissor_ymax = stored[3];
 680       }
 681
 682       setup->dirty |= LP_SETUP_NEW_FS;
 683    }
 684
 685    if(setup->dirty & LP_SETUP_NEW_CONSTANTS) {
 686       struct pipe_resource *buffer = setup->constants.current;
 687
 688       if(buffer) {
 689          unsigned current_size = buffer->width0;
 690          const void *current_data = llvmpipe_resource_data(buffer);
 691
 692          /* TODO: copy only the actually used constants? */
 693
 694          if(setup->constants.stored_size != current_size ||
 695             !setup->constants.stored_data ||
 696             memcmp(setup->constants.stored_data,
 697                    current_data,
 698                    current_size) != 0) {
 699             void *stored;
 700
 701             stored = lp_scene_alloc(scene, current_size);
 702             if(stored) {
 703                memcpy(stored,
 704                       current_data,
 705                       current_size);
 706                setup->constants.stored_size = current_size;
 707                setup->constants.stored_data = stored;
 708             }
 709          }
 710       }
 711       else {
 712          setup->constants.stored_size = 0;
 713          setup->constants.stored_data = NULL;
 714       }
 715
 716       setup->fs.current.jit_context.constants = setup->constants.stored_data;
 717       setup->dirty |= LP_SETUP_NEW_FS;
 718    }
 719
 720
 721    if(setup->dirty & LP_SETUP_NEW_FS) {
 722       if(!setup->fs.stored ||
 723          memcmp(setup->fs.stored,
 724                 &setup->fs.current,
 725                 sizeof setup->fs.current) != 0) {
 726          /* The fs state that's been stored in the scene is different from
 727           * the new, current state.  So allocate a new lp_rast_state object
 728           * and append it to the bin's setup data buffer.
 729           */
 730          uint i;
 731          struct lp_rast_state *stored =
 732             (struct lp_rast_state *) lp_scene_alloc(scene, sizeof *stored);
 733          if(stored) {
 734             memcpy(stored,
 735                    &setup->fs.current,
 736                    sizeof setup->fs.current);
 737             setup->fs.stored = stored;
 738
 739             /* put the state-set command into all bins */
 740             lp_scene_bin_state_command( scene,
 741                                         lp_rast_set_state,
 742                                         lp_rast_arg_state(setup->fs.stored) );
 743          }
 744
 745          /* The scene now references the textures in the rasterization
 746           * state record.  Note that now.
 747           */
 748          for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 749             if (setup->fs.current_tex[i])
 750                lp_scene_add_resource_reference(scene, setup->fs.current_tex[i]);
 751          }
 752       }
 753    }
 754
 755    setup->dirty = 0;
 756
 757    assert(setup->fs.stored);
 758 }
 759
 760
 761
 762 /* Only caller is lp_setup_vbuf_destroy()
 763  */
 764 void
 765 lp_setup_destroy( struct lp_setup_context *setup )
 766 {
 767    uint i;
 768
 769    reset_context( setup );
 770
 771    util_unreference_framebuffer_state(&setup->fb);
 772
 773    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
 774       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
 775    }
 776
 777    pipe_resource_reference(&setup->constants.current, NULL);
 778
 779    /* free the scenes in the 'empty' queue */
 780    while (1) {
 781       struct lp_scene *scene = lp_scene_dequeue(setup->empty_scenes, FALSE);
 782       if (!scene)
 783          break;
 784       lp_scene_destroy(scene);
 785    }
 786
 787    lp_scene_queue_destroy(setup->empty_scenes);
 788
 789    lp_rast_destroy( setup->rast );
 790
 791    FREE( setup );
 792 }
 793
 794
 795 /**
 796  * Create a new primitive tiling engine.  Plug it into the backend of
 797  * the draw module.  Currently also creates a rasterizer to use with
 798  * it.
 799  */
 800 struct lp_setup_context *
 801 lp_setup_create( struct pipe_context *pipe,
 802                  struct draw_context *draw )
 803 {
 804    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
 805    struct lp_setup_context *setup = CALLOC_STRUCT(lp_setup_context);
 806    unsigned i;
 807
 808    if (!setup)
 809       return NULL;
 810
 811    lp_setup_init_vbuf(setup);
 812
 813    setup->empty_scenes = lp_scene_queue_create();
 814    if (!setup->empty_scenes)
 815       goto fail;
 816
 817    /* XXX: move this to the screen and share between contexts:
 818     */
 819    setup->num_threads = screen->num_threads;
 820    setup->rast = lp_rast_create(screen->num_threads);
 821    if (!setup->rast)
 822       goto fail;
 823
 824    setup->vbuf = draw_vbuf_stage(draw, &setup->base);
 825    if (!setup->vbuf)
 826       goto fail;
 827
 828    draw_set_rasterize_stage(draw, setup->vbuf);
 829    draw_set_render(draw, &setup->base);
 830
 831    /* create some empty scenes */
 832    for (i = 0; i < MAX_SCENES; i++) {
 833       setup->scenes[i] = lp_scene_create( pipe, setup->empty_scenes );
 834
 835       lp_scene_enqueue(setup->empty_scenes, setup->scenes[i]);
 836    }
 837
 838    setup->triangle = first_triangle;
 839    setup->line     = first_line;
 840    setup->point    = first_point;
 841
 842    setup->dirty = ~0;
 843
 844    return setup;
 845
 846 fail:
 847    if (setup->rast)
 848       lp_rast_destroy( setup->rast );
 849
 850    if (setup->vbuf)
 851       ;
 852
 853    if (setup->empty_scenes)
 854       lp_scene_queue_destroy(setup->empty_scenes);
 855
 856    FREE(setup);
 857    return NULL;
 858 }
 859